Trigger shot

An injection of hCG given to a woman to trigger ovulation of mature egg-containing follicles. It is typically instructed to be given at a very specific time prior to egg retrieval, to maximize maturation and release timing. Synthetic hCG is marketed under the brand names Novarel, Pregnyl, Ovidrel and Profasi.

Related Terms:

follicles, human chorionic gonadotropin (hCG), ovulation